Bicycle theft-guard.



No. 636,!33. v I Pat ented Oct. 3|, I899.

. E. n. aoonsou.-

BICYCLE THEFT GUARD.

7 (Application filed Feb. 7, 1899.) (No Model.)

J Jmnn' ma -1mm WITNESSES g- I INVENTEI M0.

amfi 452% dew/Mm UNITED STAT S EDWARD D. GOODSON, on BOSTON, MASSACHUSETTS.

PATENT OFFICE.

BICYCLE TH EFT-G UARD.

SPECIFICATION forming part of Letters Patent No. 636,133, dated October 31, 1899.

Application filed February 7, 1899- Serial No. 704,820. (No model.)

To all whom it may concern:

Be it known that I, EDWARD D. GooDsoN,o Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Bicycle Theft-Guards, of which the following, taken in connection with the accompanying drawings,isaspecification.

My invention relates to a device by which the handle-bar of a bicycle may be madeentirely inoperative for guiding; and it consists in means by which the operator can by a slight manipulation render the handle-bar useless for guiding the bicycle, the object being to prevent any unauthorized person from using or stealing the bicycle. This object I attain by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective view showing the upper part of a handle-bar stem and parts of the handle-bar and connections. Fig. 2 is a plan showing the coupling that connects the handle-bars to the handlebar stem, a part being represented as broken away to show the interior. Fig. 3 is a vertical section taken on line X X of Fig. 2. Fig. 4 is a cross-section taken on line Y Y of Fig. Fig. 5 shows in perspective one of the details.

In the drawings the handle-bar stem is indicated by A,and the handle-bar byHH.' The coupling for uniting the handle-bar H H to the stem A has a cylindrical projection E eX- tending downward into the stem A. This pro j ection E is rigidly connected to the coupling B B, but can turn freely in the stem A, and is held from being drawn out of the stem by a pin H, which engages with the groove H. The handle-bar is prevented from slipping or rotating in the coupling B B by the stud K, which engages with one of the openings K K K. (See Fig. By this construction the handle-bar may be adjusted to suit the user. The coupling is made, as shown, in two parts. The part B is hinged by the pivot B to the lower part. The two parts B and B are held together by a latch-piece D. (See Fig. 3.)

This latch-piece is pivoted to the lower part by the pin D and has a screw-stud D at .its upper end, upon which a screw-nut G engages. The screw-nut 0 when turned on fits into a recess 0, so that the swinginglatch-piece I) cannot be swung out of connection unless the screw-nut O is turned so as to rise above the upper surface of the lug L. Then the latch can be swung outward, so as to clear the lug L and allow the part B to be opened, so that the handle-bar H H may be adjusted or removed. H

To prevent the handle-bar from swinging when the bicycle is in use, I have a pin P. (Shown in full in Fig. 5.) This pin fits in a keyway made in the part E and in the stem A. (See Fig. 4.) It is obvious that when the pin P is in position the part E will be locked, so as not to rotate in the stem Athat is, the handle-bar is firmly connected to the stem, so that the bicycle can be guided; but when the pin P is out of the keyway then the projection E is free to swing and the handle-bar will be entirely inoperative for guiding the bicycle.

To remove the pin P, the owner of the bicycle has only to loosen the screw-nut 0, swing out the lat-ch D, and open the part B, and then the pin P may be drawn out of the keyway byinsertiug the point of a pin or knife-blade into the groove P. (See Fig. 5.) The owner can take the pin with him and leave his bicycle in a condition in which it cannot be used, as

it is unguidable.

In a bicycle, the combination of a handle bar, a coupling adapted to detachably hold said handle-bar, and having a cylindrical projection extending downward into the stem and swivelingly held therein by an annular groove and cross-pin, a vertical locking-pin, located directly under the handle-bar, whereby it is removable only when the handle-bar is taken out, and adapted to engage with slots made in the interior surface of the stem and in the surface of the said projection; substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 6th day of February, A. D. 1899.

EDWARD D. GOODSON. 

